laughlin



(m Model.) 4 Sheets-Sheet 1.

A. LAUGHLINK; J. REULEAUX.

' REGENBBATIVE FURNACE- No. 529,556 Patented Nov. 20, 1894.

WITNESSES INVENTORS ms Nonms PETERS co. PNOTO-LITNQ, wnsummon, 0.1:.

(No Model.) 4 Sheets-Sheet 2.

A. LAUGHLIN 8v 'J.. REULEAUX. REGENERATIVE FURNACE.

N0. 529,556, Patented Nov; 20,1894.

wu'rnss sss INVENTORS ma uofims PErERs ca. PHOTO LITHUu WASHINGTON D c.

(No Model.) 4 SheetsSheet 3.

A. LAUGHLIN 85 J. REULEAUX. REGENERATIVE FURNACE.

No 529,556. Patented Nov. 20, 1894.

WITNESSES N INVENTORS M QL W W wamjfl I L MAW W43 flfiQ/Mdmfl 5 (No Model.)

E D. E x

A. LAUGHLIN & J. REULEAUX. REGENERATIVE FURNACE WITNESSES Nrrnn TATES n'rnnr @rricn. 1

ALEXANDER LAUGHLIN, OF SEIVIOKLEY, AND JOSEF REULEAUX, OF PITTS- BURG, PENNSYLVANIA; SAID :REULEAUX ASSIGNOR TO SAID LAUGHLIN.

REGENERATIVE FURNACE.

SPEQIFICATION forming part of Letters Patent No. 529.556, dated November 20, 1894.

Application filed October 1'7, 1893. Serial No. 488,368. (No model.)

T all whom it may concern.-

Be it known that we, ALEXANDER LAUGH- LIN, of Sewickley, and Josue REULEAUX, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Regenerative Furnaces, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming [0 part of this specification, in which- Figure 1 is a horizontal section on the line I-I of Figs. 3 and 4. Fig. 2 is a vertical longitudinal section on the irregular line IIII of Fig. 1; and Figs. 3,4, and 5 are vertical :5 cross-sectional views on the lines III-III, IV-IV and VV respectively of Fig. 1.

Our invention relates to that class of regenerative furnaces wherein two or more separate heating or melting chambers are employed in the same furnace, and is designed to afiord a perfect control over the direction, volume and speed of the gas and air furnished to each chamber independently of the other chambers, and also in like manner give separate control of the products passing from each chamber, though a single stack common to all the chambers is employed.

Heretofore, in the working of regenerative furnaces having two or more heating cham- 0 here, a single reversing valve controlled the currents of gas or air passing to the furnace, while the outgoing products were regulated by a single stack damper. The diflicuities arising from such construction are apparent, since the direction, speed and volume of the currents to and from each chamber must be the same. If ingots are being heated and a cold ingot is charged into one heating-chamber, it is desirable to admit a large volume of gas and air to said chamber and open the stack-damper to obtain a good draft therefor, but as the same amount of gas and air must pass through the other chambers wherein the ingots are already partially or 5 wholly heated, a large loss occurs therein.

If the volumes of gas and air are lowered. the cold ingots will not receive the proper heat and vexatious delays will result. These losses and delays are entirely done away with by our invention, which consists broadly in a furnace having two or more heating or melting chambers, a single draft stack, and means for reversing the direction of the gas and air through one chamber independently of the other chambers.

It also consists in means for separately controlling the gases passing from each chamber to the stack, as well as in the construction and arrangement of parts as hereinafter more fully described and set forth in the claims.

In the drawings, in which similar numerals indicate corresponding parts, 2 is a furnace having a series of separated heating chambers 3 built therein. On each side of this furnace are built the three pairs of regenerative chambers, 4 being the gas, and 5 the air regenerators. From each corresponding pair of gas regenerators 4, on opposite sides of the furnace, tlues 6 lead to the reversing valves 8. From each reversing valve 8 leads a vertical pipe or uptake 7, the upper end of which enters a horizontal flue 9, which leads to the large gas main 10 common to all the lines 9, the opening from each flue into its pipe being regulated by a mushroomvalve 11. The pairs of flues 12 from the corresponding opposite air regenerators enter reversing valves 14:, and mushroom valves 15 regulate the admission of air to their open upper ends.

From the lower open end of the pipe 7 for the innermost pair of lines 6, a horizontal stack conduit 16 leads to the stack, and into this conduit opens the lower end of the re versing valve 14 for the outermost pair of air fines 12. In similar manner the other corresponding pairs of vertical gas and air pipes open at their lower ends into two other separate stack fines 16 located side by side with the first. The reversing valves 8 and 1-1 are arranged in diagonal lines so as to be located over the successive stack fines, and

' each of these fines is provided with a regulating damper 17.

At th outer ends of the gas fines 9 are 5 swinging doors 18 for gaining admission thereto, and the opening from each flue 9 into the gas main is regulated by a sliding damper 19. The connections of the regenerators with the fiues and the furnace-cham- IOO bers are clearly illustrated in Figs. 4 and 5.

The operation of the furnace is apparent,

each furnace-chamber being operated in the manner of a separate furnace, the mush roomvalves 11 regulating the supply of gas and the reversing valves 8 its direction, While the mushroom-Valves 15 regulate the'supply of air and the reversing valves 14- its direction. Each of the stack-dampers 17 regulates the velocity of the gases passing through each chamber independently of the other chambers, these gases issuing from each stack-flue into the common stack 20.

Many changes may be made in the form and arrangement of the parts without departure from our invention, which lies broadly in the furnace having a single stack, separate furnace chambers, regenerators for each chamber, and means for separately controlling the gases passing from each chamber to the stack independently of the others.

We claim 1. A furnace having two or more separated chambers therein, regenerators for said chambers, a single stack common to all the chambers, and means for reversing the direction of the gas and air through one chamber independently of the other chambers; substantially as described.

2. A furnace having two or more separated chambers therein, independent regenerators for said chambers, a single stack common to all the chambers, and means for regulating the draft of the outgoing gases passing from 1 one chamber independently of the other chambers; substantially as described.

A furnace having two or more separated chambers therein, independent regenerators for said chambers, a single stack; common to all the chambers, means for regulating the supply of gas and air to each chamber independently of the other chambers, and separate means for regulating the velocity of the gases passing from one chamber independently of the other chambers; substantially as described.

4. A furnace having two or more separated chambers therein, regenerators for said chambers, a single stack common to all the chambers, and means for regulating the velocity, and reversing the direction, of gases passing through one chamber independently of the other chambers; substantially as described.

5. A furnace having two or more separated chambers, independent regenerators for said chambers, a single stack common to all the chambers, and a separate valve-controlled flue leading from each regenerator to the stack; substantially as described.

In testimony whereof we have hereunto set our hands.

ALEXANDER LAUGHLIN. JOSEE REULEAUX. \Vitnesses:

W. B. CORWIN, H. M. CORWIN. 

